Antarctic Search for Meteorites (ANSMET) Search this
Place:
Antarctica
Collection Date:
2009
Notes:
# NASA data for MIL 090340 Weathering: C Fracturing: A/B Pairing: MIL 090405 Fa: 27-30 mol %
The exteriors have shiny dark brown fusion crust with some rusty patches and pits. The interiors are dark gray to black with crystalline textures, rust and high metal.
These sections consist of an aggregate of equigranular (up to 1-2 mm) olivine grains. Individual olivine grains are rimmed by carbon-rich material containing grains of metal. Olivine has cores of Fa₂₇₋₃₀. Pyroxene grains have compositions of Fs₁₀₋₂₆ and Wo₂₋₄₄. These meteorites are ureilites.
